Struct UnsafeSyncCell

pub struct UnsafeSyncCell<T>(/* private fields */);

Sync version of UnsafeCell<MaybeUninit<T>>. While it should not be used outside of this crate, it may be useful in certain scenarios.

Implementations

impl<T> UnsafeSyncCell<T>

pub fn check_zeroed(ptr: *const T) -> bool

Checks whether the memory pointed to by ptr, for a certain type T, is composed entirely of zeros.

pub unsafe fn take_inner(&self) -> T

Takes inner value, replacing its old location with zeros.

Safety

The cell will be uninitialised and so must be initialised again with Self::as_mut_ptr.

pub unsafe fn inner_duplicate(&self) -> T

Reads and duplicates the value. For more information on MaybeUninit, refer to the Rust documentation.

Safety

The inner value must be initialised (i.e., properly constructed).

pub unsafe fn inner_ref<'a>(&self) -> &'a T

Returns a reference to inner value.

Safety

Inner value must be initialised (i.e., properly constructed).

pub unsafe fn inner_ref_mut<'a>(&self) -> &'a mut T

Returns a mutable reference to inner value.

Safety

Not to be used to initialise inner value! Use Self::as_mut_ptr, instead.

pub fn as_mut_ptr(&self) -> *mut T

Gets a mutable pointer to the contained value. See MaybeUninit::as_mut_ptr.

Trait Implementations

impl<T: Clone> Clone for UnsafeSyncCell<T>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Default> Default for UnsafeSyncCell<T>

fn default() -> UnsafeSyncCell<T>

Creates an UnsafeSyncCell, with the Default value for T.

impl<T> Drop for UnsafeSyncCell<T>

fn drop(&mut self)

Executes the destructor for this type.

impl<T> From<T> for UnsafeSyncCell<T>

fn from(t: T) -> UnsafeSyncCell<T>

Creates a new UnsafeSyncCell<T> containing the given value.

impl<T: Sync> Sync for UnsafeSyncCell<T>